package demo2;

public class Prepro {
    protected int a;
    protected String str;
public int age;
public String name;
    public Prepro(int a, String str) {
        this.a = a;
        this.str = str;
    }

    @Override
    public String toString() {
        return "Prepro{" +
                "a=" + a +
                ", str='" + str + '\'' +
                '}';
    }
}
